I need help to paraphrase this sentences Immigration has shaped the United States as a nation since the first newcomers arrived over 400 years ago.

I need help to paraphrase this sentences

Immigration has shaped the United States as a nation since the first newcomers arrived over 400 years ago. Beyond being a powerful demographic force responsible for how the country and its population became what they are today, immigration has contributed deeply to many of the economic, social, and political processes that are foundational to the United States as a nation.